E-Grade, I-Grade ................................ –40°C to 125°C
MP-Grade .......................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
IN
24 23 22 21
GND 1
BSTOUT1 2
NC 3
INTV
CC
4
GND 5
LDOIN1 6
GND 7
OUT1 8
UDD PACKAGE
24-LEAD (3mm
×
5mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 38°C/W,
θ
JC
= 5.0°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT3095EUDD#PBF
LT3095IUDD#PBF
LT3095MPUDD#PBF
TAPE AND REEL
LT3095EUDD#TRPBF
LT3095IUDD#TRPBF
LT3095MPUDD#TRPBF
PART MARKING
LGRQ
LGRQ
LGRQ
PACKAGE DESCRIPTION
24-Lead (3mm x 5mm) Plastic QFN
24-Lead (3mm x 5mm) Plastic QFN
24-Lead (3mm x 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 5V, SYNC = 0V unless otherwise noted.
SYMBOL PARAMETER
V
IN
I
IN
V
EN1,2
Input Voltage Supply Range
V
IN
Pin Supply Current
V
TRIP
(off to on)
Enable Threshold Hysteresis
Enable Pin Current
V
EN
= 5V
V
EN1
= V
EN2
= 5.0V, V
IN
= 5V (Not Switching)
V
EN1
= V
EN2
= 0.3V, V
IN
= 20V (Shutdown)
V
EN1,2
Rising
l
elecTrical characTerisTics
CONDITIONS
l
IN
MIN
3
TYP
3.25
1.6
MAX
20
5
5
1.35
135
5
UNITS
V
mA
μA
V
mV
μA
1.12
110
1.23
125
1
2
3095f
For more information
www.linear.com/LT3095
LT3095
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 5V, SYNC = 0V unless otherwise noted.
SYMBOL PARAMETER
INTV
CC
INTV
CC
Voltage
INTV
CC
Under Voltage Lockout
INTV
CC
Under Voltage Lockout
Hysteresis
Boost Regulator
BOOST
(V
LDOIN
– V
OUT
) Differential Regulation
Voltage
Boost Maximum Duty Cycle
Switch Pin Leakage Current
Boost Switch Peak Current Limit
Switch V
CESAT
OSC
Oscillator Frequency
V
EN1
= V
EN2
= 5V, V
OUT
= 10V, I
LOAD
= 0mA
f
OSC
= 1MHz
Switch OFF, V
SW
= 12V
(Note 3)
I
SW
= 400mA
RT = 210k, V
IN
= 5V
RT = 100k, V
IN
= 5V
RT = 44.5k, V
IN
= 5V
V
SYNC
= 0V to 1.5V pulse
V
SYNC
= 5V
f
OSC
= 1MHz, 50% duty cycle
V
OUT
= 10V, I
LOAD
= 0mA
V
OUT
= 1V to 20V, I
LOAD
= 0mA to 50mA
Offset Voltage (V
OUT
– V
SET
)
LDO Voltage Regulation: ΔI
SET
LDO Voltage Regulation: ΔV
OS
(Note 5)
LDO Load Regulation: ΔI
SET
LDO Load Regulation: ΔV
OS
(Note 4)
LDOIN Supply Current
Ripple Rejection
3V < V
OUT
< 20V, I
LOAD
= 50mA
LDO Output Noise Voltage
LDO Output Current Limit
V
OUT
= 10V, I
LOAD
= 0mA
V
OUT
= 3V to 20V, I
LOAD
= 0mA
V
OUT
= 1V to 20V, I
LOAD
= 0mA
V
OUT
= 10V, I
LOAD
= 0mA to 50mA
V
OUT
= 10V, I
LOAD
= 0mA to 50mA
I
LOAD
= 0mA
f
RIPPLE
= 450kHz, C
SET
= 0.1µF, C
OUT
= 2.2µF, I
LOAD
= 50mA
f
RIPPLE
= 1MHz, C
SET
= 0.1µF, C
OUT
= 2.2µF, I
LOAD
= 50mA
f
RIPPLE
= 2MHz, C
SET
= 0.1µF, C
OUT
= 2.2µF, I
LOAD
= 50mA
V
OUT
= 5V, I
LOAD
= 50mA, C
SET
= 0.47µF, C
OUT
= 2.2µF,
BW = 10Hz to 100KHz.
V
OUT
= 1V to 20V
l
l
l
l
l
l
l
l
l
elecTrical characTerisTics
CONDITIONS
V
EN1
= V
EN2
= 5V
V
EN1
= V
EN2
= 5V, INTV
CC
Rising
V
EN1
= V
EN2
= 5V
l
MIN
2.25
TYP
2.7
2.4
300
MAX
2.55
UNITS
V
V
mV
1.85
90
2
2.15
V
%
0.01
0.8
0.47
0.95
1.85
20
15
0.8
49.5
49
–1
1.1
50
50
0.15
–60
–50
100
–6
450
73
72
71
4
55
70
0.95
250
0.5
1
2
1
1.1
0.53
1.05
2.15
80
20
1.3
50.5
51
1
–100
150
µA
A
mV
MHz
MHz
MHz
%
µA
V
µA
µA
mV
nA
µV
nA
mV
µA
dB
SYNC Duty Cycle Range
SYNC Pin Input Current
SYNC Threshold
LDO Linear Regulator
LDO
SET Pin Current
µV
RMS
mA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime. Absolute Maximum Ratings are those values
beyond which the life of a device may be impaired.
Note 2:
The LT3095E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT3095I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3095MP is 100% tested over the –55°C to
125°C operating junction temperature range.
Note 3:
The boost peak current limit is measured in a low frequency test
mode. In operation at high frequencies, the inductor current may exceed
this value due to delays in the control circuitry.
Note 4:
Linear Technology
®
is unable to guarantee maximum load
regulation due to production test limitations with Kelvin-sensing the
package pins. Please consult the Typical Performance Characteristics for
curves of output regulation as a function of load current.
Note 5:
For V
OUT
< 1.25V, the LT3095 is tested with a 30µA external
load. This load substitutes for an internal 30µA load which exists for
目前医疗监护中无法动态掌握患者信息，一旦患者病情恶化，无法在第一时间实施抢救，对数据信息维护效率低。 文中首先阐述了蓝牙技术及其在医疗监护中应用的可行性，然后设计了系统框架，给出了具体功能，BlueTooth Wireless Communication Technology Application in Medical Monitoring包括数据采集和语音报警，最后对蓝牙信号在传输...[详细]
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